Grand Junction isn't a tourist destination. So, when stuck in town buying certain things you can't get up valley - a bridesmaid dress and comics, what a combination - there's not a lot of places you can go.
Junction is, as Sara says, the capital of chain restaurants. Kannah Creek Brewing Company is a welcome sight to the rest of watered down margaritas, dime a dozen drafts of Mass-Produced Light and taco stands around.
True, when you walk in, you get a crazy whiff of a mixture of yeast, hops and spaghetti sauce. But on a warm spring day, the patio is jam packed with kids from Mesa State along with the energy of last night and relaxing Sunday chatter. The walls on the patio are a bit high, and block your attention from anything else but the people sitting around you, but you take what you can get down valley.
Beer wise, a good selection of microbrewed stuff. They just won a Gold from the WBC for their Lands End Amber - and it was good brew, if straight forward. Most of their other beers seem similar and the refrain is the same: good stuff compared to a mass market brew, decent for Colorado beers, but taken in Western Slope context, delightful.
If you're stuck in Junction, take a gander. I had fun.